Lower parts unknown. Stems apparently terete. Leaves cordate but not exactly so, because the auricles tend to be drawn out rather than rounded, to 9 cm across, 5-7-nerved; secondary nerves not conspicuous in the network; petiole c. ½ as long as the blade. Male flowering axes solitary or 2-3 together, directed downwards from the axils of upper leaves or not infrequently on short special leafless branches: axis rigid, up to 15 cm, many-flowered; bracts lanceolate, reflexed along with the pedicel, acute. Pedicels to 1 mm. Tube of flower in anthesis ½ mm deep. Tepals long-ovate, acute, 1½-2 mm long. Stamens inserted below the tepals with their filaments inclined towards the centre of the flower, 3 of them shortest. Female flowering axes solitary, directed stiffly downwards from the axil, with numerous flowers which face forward and remain facing forward while the pedicel, at first 3-4 mm long, grows into a curved stipe 2-3 cm long. Tepals lanceolate-acute, 2 mm long. Capsule remarkably large (Fig. 5e), facing earthwards; wings 4 by 3½-4 cm; apex retuse; base drawn out into the stipe. Seeds winged to a width of 3 cm.
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